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Table 2 Descriptive statistics of the results for dyad and individual data (including ICC)

From: What interdependence can tell us about collaborative learning: a statistical and psychological perspective

  N M SD % Decrease in SD ICC
Individual Dyad Individual Dyad
Without MC
 Performance pre 42 21 10.10 1.86 1.01 45.70 − .41
 Performance post 42 21 11.50 1.76 1.62 7.95 .67
 Confidence pre 42 21 11.52 2.73 2.03 25.64 .11
 Confidence post 42 21 15.31 2.24 1.78 20.54 .26
With MC
 Performance pre 40 20 9.83 2.09 1.34 35.89 − .17
 Performance post 40 20 12.28 1.49 1.21 18.79 .31
 Confidence pre 40 20 11.20 2.13 1.57 26.29 .08
 Confidence post 40 20 14.13 2.46 2.19 10.98 .56
Overall
 Performance pre 82 41 9.96 2.00 1.17 41.50 − .28
 Performance post 82 41 11.88 1.67 1.47 11.98 .55
 Confidence pre 82 41 11.37 2.44 1.81 25.82 .09
 Confidence post 82 41 14.73 2.41 2.05 14.94 .44